CN105963891A - Start-stop switching circuit controlled by two wires, terminal load, detection circuit and detection method - Google Patents
Start-stop switching circuit controlled by two wires, terminal load, detection circuit and detection method Download PDFInfo
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- CN105963891A CN105963891A CN201610430417.0A CN201610430417A CN105963891A CN 105963891 A CN105963891 A CN 105963891A CN 201610430417 A CN201610430417 A CN 201610430417A CN 105963891 A CN105963891 A CN 105963891A
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
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Abstract
The invention discloses a start-stop switching circuit controlled by two wires and used in a fire alarm system for controlling start and stop of fire control linkage equipment. The start-stop switching circuit comprises a 24V power supply, two PNP type triodes V101 and V104, four NPN type triodes V102, V103, V105 and V106, and a fuse F101, wherein the triodes V101, V102 and V106 form a switching circuit that controls 24V direct current output in a forward direction and switches off output on the two wires; and the triodes V103, V104 and V105 form a switching circuit that controls 24V direct current output in a reverse direction and switches off output on the two wires. The invention also provides a terminal load matched with the abovementioned switching circuit, a detection circuit and a detection method. A principle of closing inertia of an electromagnetic relay switch is utilized in the detection process. According to the start-stop switching circuit, the start and stop of the fire control linkage equipment can be directly controlled by using the two wires, a short circuit and an open circuit on the two wires and a linkage equipment feedback state can be detected through matching of the terminal load which is connected to a linkage equipment side in parallel.
Description
Technical field
The present invention relates to fire alarm control unit coordinated signals technical field, specifically a kind of employing 2 lines just can directly control
The control circuit of fire fighting linkage equipment start and stop, by fire fighting linkage equipment end and connect terminator just can detect short circuit,
Open circuit and feedback information.
Background technology
The coordinated signals function of fire alarm control unit is a very important function of controller.When a fire,
Controller is after receiving the fire alarm signal that detector sends, and while sending alarm signal, opens with being also reliably capable
The fire protection linkage control equipment such as dynamic fire pump, spray pump, blower fan, fire resisting shutter, for stamping out a fire in time and personnel escape
Life tries to gain time precious to one.
And the Multi-line linkage dish of traditional fire alarm control unit goes to control interlocking equipment by connecting many wire modules again
Start and stop, the not only wiring of this mode is complicated, and the many wire modules connected add the fault rate of coordinated signals, unreliable
Property etc. factor, and it is big to have quantities, and cost is high, and the not shortcoming such as easy care.The most traditional Multi-line linkage dish
Short circuit, open circuit and feedback information detection partial circuit principle are complicated, are difficult to investigation and maintenance when breaking down.Furthermore, i.e.
The new national standard implemented is also required that, and the Multi-line linkage dish of fire alarm control unit is wanted directly to control fire-fighting link and set
Standby start and stop, to guarantee when fire occurs, the high reliability of fire protection linkage control.
Therefore one just can control interlocking equipment start and stop only with 2 lines, and can also detect the electricity of short circuit, open circuit and feedback
Road, is applied on the Multi-line linkage dish of fire alarm control unit, it is not necessary to connect many wire modules again.Due to it has can be straight
Connect control interlocking equipment start and stop, wiring is simple, quantities is little, reliability is high, be easier the advantages such as maintenance, additionally its
The circuit theory of short circuit, open circuit and feedback status information detection part is simple, be prone to the investigation feature such as fault and maintenance, must
To more and more be applied.
Summary of the invention
It is an object of the invention to provide the start stop switch circuit of a kind of 2 line traffic controls, this circuit is without connecting multi-thread mould again
Block, and just can directly control the start and stop of fire fighting linkage equipment only with 2 lines, and by voltage detecting comparison circuit and
It is attempted by the cooperation of a kind of terminator of fire fighting linkage equipment end, it is achieved the short circuit on 2 lines, open circuit and linkage are set
The function of standby feedback status information detection.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of start stop switch circuit of 2 line traffic controls, for controlling the start and stop of fire fighting linkage equipment, including 24V power supply, 2
Individual PNP type triode V101 and V104,4 NPN type triode V102, V103, V105 and V106,1 insurance
Silk F101.Wherein, one end of electric fuse F101 is connected to the colelctor electrode of audion V101 and the current collection of audion V103
Between pole, the other end of electric fuse F101 is positive terminal C+；The colelctor electrode of audion V104 is with audion V106's
Colelctor electrode connects, as negative terminal C-.
Wherein, the equal ground connection of the emitter stage of audion V103 and V106.The emitter stage of audion V101 connects 24V power supply
Positive pole.
The terminator that a kind of and aforementioned 2 line traffic controls start stop switch circuit coordinate, the LOAD1/RET1 of this terminator
Terminal connects positive terminal C+, and the LOAD2 terminal of terminator connects negative terminal C-through diode V2；Resistance R1
With diode V1 is connected in series between positive terminal C+ and negative terminal C-；Resistance R2 is connected to RET2 terminal with negative
Between the most sub-C-.
A kind of testing circuit, coordinates aforesaid terminator, for detecting the short circuit of fire fighting linkage equipment, open circuit and feedback
State, this testing circuit is connected in parallel between the emitter stage of 24V positive source and audion 104 by resistance R107；Should
Testing circuit include comparator N101A, N101B, N101C, divider resistance R107-113, filter capacitor C101, on
Pull-up resistor R114-116；Ground connection after resistance R107, R108, C101 series connection, resistance R109, R110, R111 connect
Rear ground connection, ground connection after resistance R112, R113 series connection；The emitter stage of connecting triode 104 between R107 and R108,
The inverting input of comparator N101A, N101B and the in-phase input end of N101C is connected respectively between R108 and C101；
Connect the in-phase input end of comparator N101A between R112 and R113, between R109 and R110, connect comparator N101B
In-phase input end, between R110 and R111 connect comparator N101C inverting input.
A kind of method detecting the short circuit of fire fighting linkage equipment, open circuit and feedback states, based on aforesaid testing circuit: when
When starting without fire fighting linkage equipment, when i.e. 2 lines export without forward 24V unidirectional current, audion V101 and audion V106
When being in turning off, reverse 24V unidirectional current can directly export, and opens audion V104 and audion V103 the most simultaneously
And on 2 lines, export reverse 24V unidirectional current carry out the detection of short circuit, open circuit and feedback states；
When there being fire fighting linkage equipment to start, when audion V101 and audion V106 is already at open mode, i.e. control
When having had forward 24V unidirectional current on 2 lines of fire fighting linkage equipment processed, need to be first turned off audion V101 and audion
The time that V106 is extremely short, make the output of forward 24V unidirectional current turn off, then open audion V104 and audion V103
The extremely short time, export reverse 24V unidirectional current, be then first turned off audion V104 and audion V103, then open three
Pole pipe V101 and audion V106 is to recover the galvanic output of forward 24V, thus completes the short circuit on 2 lines, open circuit
Detection with interlocking equipment feedback states.
The invention has the beneficial effects as follows, not only without connecting many wire modules again, and just can directly control to disappear only with 2 lines
The start and stop of anti-interlocking equipment and by the cooperation of terminator, just can realize 2 lines to controlling fire fighting linkage equipment and carry out
Short-circuit condition, off state and the function of fire fighting linkage equipment feedback states detection, the most not only drastically increase and offset
Reliability, wiring that anti-interlocking equipment controls are few and simple, quantities is little, and owing to short open circuit and feedback states are believed
Breath test section parallel circuit principle is simple and is prone to investigate fault, keeps in repair and maintenance etc..
Accompanying drawing explanation
The present invention is further described below in conjunction with the accompanying drawings:
Fig. 1 is the circuit theory diagrams of the start stop switch circuit in the present invention；
Fig. 2 is the circuit diagram of the terminator in the present invention；
Fig. 3 is the circuit diagram of testing circuit of the present invention.
Detailed description of the invention
As it is shown in figure 1, the start stop switch circuit of a kind of 2 line traffic controls, including 24V power supply, 2 PNP type triode V101
With V104,4 NPN type triode V102, V103, V105 and V106,1 electric fuse F101.Wherein, insurance
One end of silk F101 is connected between the colelctor electrode of audion V101 and the colelctor electrode of audion V103, electric fuse F101
The other end be positive terminal C+；The colelctor electrode of audion V104 is connected with the colelctor electrode of audion V106, as negative
The most sub-C-.The equal ground connection of emitter stage of audion V103 and V106.In Fig. 1, EN1, EN2, EN3 and EN4 are for disappearing
The control signal of anti-interlocking equipment start and stop.
As it is shown in figure 1, the base circuit of audion V101 includes: audion V102, R101-102；Wherein, three pole
Pipe V102 is NPN type triode, and the emitter stage of audion V102 is connected to ground.The base circuit bag of audion V103
Include: R103.The base circuit of audion V104 includes: audion V105, R104-105；Wherein, audion V105
For NPN type triode, the emitter stage of audion V105 is connected to ground.The base circuit of audion V106 includes: R106.
The structure of above base circuit is as it is shown in figure 1, each element and operation principle are the most normal of those skilled in the art
Knowing, therefore not to repeat here.
Audion V101 and V106 constitutes and controls the output of forward 24V unidirectional current and the on-off circuit of shutoff output on 2 lines.
24V positive source is through audion V101, electric fuse F101, and (electromagnetism of fire fighting linkage equipment continues to be then passed through equipment
Electrical equipment) and terminator arrival audion V106, return to 24V power cathode (ground connection), constitute a loop.
When audion V101 and audion V106 opens the most simultaneously, this on-off circuit will export forward on 2 lines
24V unidirectional current, starts the electromagnetic relay controlling fire fighting linkage equipment, thus starts fire fighting linkage equipment.And when three poles
The when that pipe V101 and audion V106 simultaneously switching off, this on-off circuit turns off the galvanic output of 24V on 2 lines,
The electromagnetic relay making control fire fighting linkage equipment disconnects, thus stops fire fighting linkage equipment.
Audion V104 and audion V103 forms the output of reverse 24V unidirectional current and the on-off circuit of shutoff output on 2 lines.
This on-off circuit utilizes the 24V unidirectional current of reversely output to carry out the detection of short circuit, open circuit and feedback states.Work as audion
The when that V104 and audion V103 opening simultaneously, 24V unidirectional current is born through resistance R107, audion V104, terminal
Load, electric fuse F101, audion V103 return to 24V power cathode, constitute a loop.As audion V104 and
The when that audion V103 opening simultaneously, this on-off circuit will export reverse 24V unidirectional current on 2 lines.And work as
The when that audion V104 and audion V103 simultaneously switching off, this on-off circuit turns off the reverse 24V on 2 lines
Galvanic output.
As shown in Figures 2 and 3, present invention also offers terminator and testing circuit, in order to have coordinated, fire-fighting is joined
Dynamic equipment short circuit, open circuit and the detection of feedback states.
Seeing accompanying drawing 2, terminator is connected in parallel with the electromagnetic relay (load) of fire fighting linkage equipment, i.e. terminal is born
The C+ terminal carried connects load end 1 (positive terminal C+), and the LOAD2 terminal of terminator connects load end 2, simultaneously
LOAD2 terminal connects negative terminal C-through diode V2.Resistance R1 and diode V1 is connected in series in positive terminal C+
And between negative terminal C-, wherein, resistance R1 is connected with terminal C+；The positive pole of diode V1 is negative with diode V2's
Pole connects；Resistance R2 is connected between RET2 terminal and negative terminal C-.LOAD1/RET1 (passive feedback 1) with just
The most sub-C+ is connected with resistance R1, and RET2 (passive feedback 2) is connected with resistance R2, LOAD1/RET1 end and RET2
End connects two groups of passive contacts of the electromagnetic relay of fire fighting linkage equipment respectively.
As shown in Figure 3, the testing circuit of the present invention is connected in parallel on 24V positive source and audion 104 by resistance R107
Emitter stage between.This testing circuit includes comparator N101A, N101B, N101C, divider resistance R107-113, filter
Ripple electric capacity C101, pull-up resistor R114-116.Ground connection after resistance R107, R108, C101 series connection, resistance R109,
Ground connection after R110, R111 series connection, ground connection after resistance R112, R113 series connection.Connecting triode between R107 and R108
The emitter stage of V104, connects inverting input and the N101C of comparator N101A, N101B respectively between R108 and C101
In-phase input end.The in-phase input end of comparator N101A is connected, between R109 and R110 between R112 and R113
Connect the in-phase input end of comparator N101B, between R110 and R111, connect the inverting input of comparator N101C.
See accompanying drawing 1-3:
Under normal circumstances, the equivalent resistance resistance of reverse 24V DC output end mouth is R107 and R1 sum；
Under short-circuit conditions, the equivalent resistance resistance of reverse 24V DC output end mouth is R107；
Under open circuit conditions, the equivalent resistance resistance of reverse 24V DC output end mouth is infinitely great；
Under feedback, the equivalent resistance resistance of reverse 24V DC output end mouth is R1 and R2 is in parallel, adds
R107。
Therefore, in the case of four kinds of differences, the equivalent resistance of the galvanic output port of 24V that 2 lines reversely export
Resistance is different, therefore the comparison voltage U1 of voltage comparator input is different under four kinds of states, therefore voltage comparator
The low and high level of short circuit, open circuit and the feedback of output is the most different such that it is able to realize short circuit, open circuit and feedback states inspection
The function surveyed.
When starting without fire fighting linkage equipment, when i.e. 2 lines export without forward 24V unidirectional current, audion V101 and three
When pole pipe V106 is in turning off, reverse 24V unidirectional current can directly export, and opens audion V104 and three the most simultaneously
Pole pipe V103 and on 2 line, export reverse 24V unidirectional current carry out the detection of short circuit, open circuit and feedback states.
And when there being fire fighting linkage equipment to start, when audion V101 and audion V106 is already at open mode, i.e.
When controlling there has been forward 24V unidirectional current on 2 lines of fire fighting linkage equipment, need to be first turned off audion V101 and three poles
The time that pipe V106 is extremely short, make the output of forward 24V unidirectional current turn off, then open audion V104 and audion V103
The extremely short time, export reverse 24V unidirectional current, be then first turned off audion V104 and audion V103, then open three
Pole pipe V101 and audion V106 is to recover the galvanic output of forward 24V.
The principle of electromagnetic relay switch Guan Bi inertia is make use of just during Gai.Although therefore turning off forward 24V unidirectional current
Output, but owing to the time is extremely short, and the most soon recover the galvanic output of forward 24V, therefore start disappears
Anti-interlocking equipment is the most still constantly in the state of startup, and can also be complete in the case of fire fighting linkage equipment starts
Become short circuit, open circuit and the detection of feedback status information.
Circuit of the present invention utilizes 2 lines can directly control the start and stop of fire fighting linkage equipment, and can be by being attempted by interlocking equipment
The cooperation of the terminator of end carries out the detection of short circuit, open circuit and feedback states.Its principle is to utilize what audion formed to open
Close circuit, on 2 lines controlling fire fighting linkage equipment, the 24V unidirectional current of forward can not only be exported, and can also export
Reverse 24V unidirectional current.Connection is controlled by the 24V unidirectional current of output forward and the 24V unidirectional current of shutoff output forward
The start and stop of dynamic equipment；By exporting reverse 24V unidirectional current, and coordinated by terminator carry out short circuit, open circuit and
The detection of the feedback states of fire protection linkage control equipment.
When carrying out short circuit, open circuit and feedback states detection, use the electromagnetic relay switch controlling interlocking equipment start and stop
Guan Bi principle of inertia, i.e. on 2 lines export forward 24V unidirectional current make electromagnetic relay close, be then turned off forward
24V unidirectional current, the simultaneously reverse 24V unidirectional current of output stage short time on 2 lines, and break at electromagnetic relay switch
Before opening, it is first turned off on 2 lines the reverse galvanic output of 24V, recovers forward 24V on 2 lines more galvanic defeated
Go out, although being so disconnected the forward 24V unidirectional current making electromagnetic relay switch close, but owing to the time is extremely short, and
And recovered the most again the galvanic output of forward 24V, therefore electromagnetic relay switch still can be constantly in the shape of Guan Bi
State.Therefore when exporting without forward 24V unidirectional current on 2 lines, i.e. start without interlocking equipment, can directly export on 2 lines
Reversely 24V unidirectional current carries out the detection of short circuit, open circuit and feedback states.
And when there being forward 24V unidirectional current to export on 2 lines, i.e. have interlocking equipment to start, it is necessary to first disconnect forward 24V
The time that unidirectional current output is extremely short, and within the time that this is extremely short, export reverse 24V unidirectional current, then it is first turned off reversely
The galvanic output of 24V, then recover the galvanic output of forward 24V, not only interlocking equipment is still within the state started,
And by the cooperation of terminator so that time under normal, short-circuit, open circuit and feedback states, the reverse 24V of this circuit
The equivalent resistance resistance of DC output end mouth is different, therefore the benchmark voltage of the circuit of voltage comparator input is different,
It is thus possible to complete short circuit, open circuit and the detection of interlocking equipment feedback states.
The invention is not restricted to the above description to embodiment, those skilled in the art are according to disclosure of the present invention, at this
The improvement that need not be carried out through creative work on the basis of invention and amendment, all should protection scope of the present invention it
In.
Claims (5)
1. a start stop switch circuit for 2 line traffic controls, for controlling the start and stop of fire fighting linkage equipment, it is characterised in that bag
Include 24V power supply, 2 PNP type triode V101 and V104,4 NPN type triode V102, V103, V105 and
V106,1 electric fuse F101；Wherein, one end of electric fuse F101 is connected to colelctor electrode and three poles of audion V101
Between the colelctor electrode of pipe V103, the other end of electric fuse F101 is positive terminal C+；The colelctor electrode of audion V104 with
The colelctor electrode of audion V106 connects, as negative terminal C-.
On-off circuit the most according to claim 1, it is characterised in that the emitter stage of audion V103 and V106 is equal
Ground connection；The emitter stage of audion V101 connects the positive pole of 24V power supply.
3. a terminator, for coordinating the on-off circuit described in claim 1, it is characterised in that this terminator
LOAD1/RET1 terminal connect positive terminal C+, the LOAD2 terminal of terminator through diode V2 connect negative pole end
Sub-C-；Resistance R1 and diode V1 is connected in series between positive terminal C+ and negative terminal C-；Resistance R2 connects
Between RET2 terminal and negative terminal C-.
4. a testing circuit, coordinates terminator described in claim 3, for detect fire fighting linkage equipment short circuit,
Open circuit and feedback states, it is characterised in that this testing circuit is connected in parallel on 24V positive source and three poles by resistance R107
Between the emitter stage of pipe V104；This testing circuit include comparator N101A, N101B, N101C, divider resistance R107-113,
Filter capacitor C101, pull-up resistor R114-116；
Wherein: ground connection after resistance R107, R108, C101 series connection, ground connection after resistance R109, R110, R111 series connection,
Ground connection after resistance R112, R113 series connection；The emitter stage of connecting triode V104 between R107 and R108, R108 and
The inverting input of comparator N101A, N101B and the in-phase input end of N101C is connected respectively between C101；R112
And the in-phase input end of connection comparator N101A between R113, connect comparator N101B's between R109 and R110
In-phase input end, connects the inverting input of comparator N101C between R110 and R111.
5. the method detecting the short circuit of fire fighting linkage equipment, open circuit and feedback states, based on described in claim 4
Testing circuit, it is characterised in that
When starting without fire fighting linkage equipment, when i.e. 2 lines export without forward 24V unidirectional current, audion V101 and three
When pole pipe V106 is in turning off, reverse 24V unidirectional current can directly export, and opens audion V104 and three the most simultaneously
Pole pipe V103 and on 2 line, export reverse 24V unidirectional current carry out the detection of short circuit, open circuit and feedback states；
When there being fire fighting linkage equipment to start, when audion V101 and audion V106 is already at open mode, i.e. control
When having had forward 24V unidirectional current on 2 lines of fire fighting linkage equipment processed, need to be first turned off audion V101 and audion
The time that V106 is extremely short, make the output of forward 24V unidirectional current turn off, then open audion V104 and audion V103
The extremely short time, export reverse 24V unidirectional current, be then first turned off audion V104 and audion V103, then open three
Pole pipe V101 and audion V106 is to recover the galvanic output of forward 24V, thus completes short circuit, open circuit and linkage and set
The detection of standby feedback states, and make the interlocking equipment having been started up be constantly in the state of startup.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610430417.0A CN105963891A (en) | 2016-06-16 | 2016-06-16 | Start-stop switching circuit controlled by two wires, terminal load, detection circuit and detection method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610430417.0A CN105963891A (en) | 2016-06-16 | 2016-06-16 | Start-stop switching circuit controlled by two wires, terminal load, detection circuit and detection method |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610430417.0A Pending CN105963891A (en) | 2016-06-16 | 2016-06-16 | Start-stop switching circuit controlled by two wires, terminal load, detection circuit and detection method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020106399A1 (en) * | 2018-11-19 | 2020-05-28 | Carrier Corporation | Output control circuit, control panel and firefighting system |
| CN117270429A (en) * | 2023-09-01 | 2023-12-22 | 北京城建智控科技股份有限公司 | Output control circuit integrating line detection and action feedback functions |
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